I saw that this morning and the dep is useless. xcb-proto only installs .xml descriptions of the X11 protocol, nothing that cairo can use directly. In fact, cairo doesn't even check for xcb-proto at all. The dep can be removed. Thanks
cairo uses xcb bits. Where did the xcb headers go?
libxcb generates, builds and installs both C headers and libraries. xcb-proto only contains .xml descriptions of the protocol along with a few python libs to help writing parsers. This is unlike the old X libs where [package]proto ships actual C headers that are #included by libX[package]. Cheers
alrightly then. removed the depend. Thanks for explaining it Remi.